Custom Mission Control Keyboard Shortcuts in OS X

One aspect of Mission Control in OS X Lion I found irritating was similar to
the problem I had with Spaces on Leopard and Snow Leopard: customizing the
shortcut keys to whatever I wanted.

For a while, I had been using the middle mouse click as a method for showing
Mission Control, because it was more convenient than using CTRL + ↑. This
provided the disadvantage that I could not use the middle mouse button for
anything else—which I commonly use for opening new tabs in Firefox.

Today I realized the solution here is similar to the solution of a previous
issue I had with customizing keyboard shortcuts. There is an entire section in
the Preferences Pane dedicated to Keyboard Shortcuts.

Open your Preferences Pane

Click **Keyboard **

Click Keyboard Shortcuts

Select Mission Control on the left pane

Click on the box next to the mission control on the right side to specify a
new shortcut